<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<form action="/addUser" method="post">
    id:<input type = "hidden" name="id">
    用户名:<input type = "text" name="username">
    密码：<input type = "text" name="password">
    <input type="submit" value="提交">
</form>
</body>
</html>